Save Status:
or to save your progress. The page will not refresh.
Answer Key:
Edit a Copy:
Make Your Own:
Crossword Word Search Worksheet
Rate This Puzzle:
Log in or sign up to rate this puzzle.

Science Terms

Vocabulary Words

Takes oxygen from the air and delivers oxygen to the blood
Fish are ________
Also known as a gas bladder
Sharks belong to a class of fish called _____ fish
Means "double life"
The union of sex cells outside the bodies of parents
A bag of fluid that surrounds the embryo
There are sometimes called warmblooded animals
Amphibians are _______ animals
There are sometimes called cold blooded animals
An organ that removes oxygen from the water
Dinosaurs are known prehistoric ______
Fertilization that happens inside the body
An animal that has a backbone
Vertebrates belong to this phylum
Most fish have a _______ system
Mammals are ________ animals
An egg that hold fluid that protects the embryo
This is the tough material of the nose and ear
Gives the embryo a rich supply of food